Speaker heart beat Fixed! | Polk Audio Subwoofer (PSW125) 

This Polk Audio Subwoofer has a buzzing sound when no audio is inputted. Also if you turn the volume knob the sound seems to fade in and out. The issue was 2 bad capacitor's of 47uf 50volts.
Some important tools for the job:
-Audio signal tracer ( • Audio signal tracer )
-Soldering iron
-47uf 50V caps.
#AudioRepair
Newson's Electronics reducing e-waste in your local community
Facebook Page - NewsonsElectronics
WebSite -- www.newsonselectronics.ca
You can also support me on Patreon -- www.patreon.co...